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Sol–Gel Synthesis of ZnO Nanorods for Ultrasensitive Detection of Acetone

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ZnO nanorods were synthesized on low cost thermally oxidized silicon substrate using a simple and easily performable sol–gel spin coating technique followed by hydrothermal growth. C-axis orientation, good crystalline properties and less structural defects containing ZnO nanorods of diameter < 70 nm were obtained. These were confirmed through XRD, FESEM and photoluminescence analysis. The nanostructured ZnO was tested for detecting acetone, a hazardous and irritant gas frequently used in industries. The fabricated nanorods exhibited excellent acetone sensing properties in a home-made gas chamber at 325 °C. The detection limit was 0.05 ppm of acetone and the response time was 8 s. The easy preparation and high sensitivity of the nanorods ZnO suggested its feasibility to be used in acetone sensing devices.
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Document Type: Research Article

Publication date: December 1, 2013

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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